The Energy Storage Report 2024

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Fluence supplying Arizona utility SRP’s first standalone 40MWh battery

Since the beginning of May, SRP has also been offering households up to US$1,800 in support for 4,500 battery energy storage systems on a first-come-first-served basis. Image: Salt River Project.

Arizona utility Salt River Project (SRP) has followed up the recent completion of a 10MW battery storage system at a solar farm by beginning work on its first standalone grid-scale battery energy storage project.

SRP said contracts have been signed and construction is underway for the 10MW / 40MWh battery project in Chandler, southeast of Phoenix, in Senator John McCain’s home state. Technology provider and system integration specialist AES Corporation will execute the project, with Fluence set to supply energy storage systems, using AES’ Advancion platform.

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The project will serve as a trial and demonstrator of energy storage’s use in mitigating demand-driven peaks on local grid networks, acting as peaking capacity. The four-hour duration storage system will charge from an SRP distribution substation. A joint statement issued by SRP, AES, Fluence and AES’ selected EPC partner Mortenson said the project “will help SRP assess how best to scale up future energy storage projects across its 2,900 square-mile electric service area”.

Although it is not located at a solar or wind farm facility, the project nonetheless is expected to aid the local network in integrating variable renewable energy resources. Arizona is currently on the verge of setting itself an enormous 3GW energy storage target and a new ‘Clean Peak Standard’ for the energy system is on the horizon.

The news follows SRP’s announcement of the just-completed Pinal Central Solar Energy Center a couple of weeks ago, where a 20MW PV plant and 10MW battery system are integrated. SRP will buy energy from Pinal Central under a 20-year power purchase agreement (PPA) with that project’s owner NextEra Energy Resources. Meanwhile, SRP and AES-Fluence have signed a 20-year agreement for the utility to use the Advancion Chandler battery system. The community based, not-for-profit utility has around a million customers in its service area.

The announcement also comes just a day after Fluence, AES’ JV with Siemens, partnered up with Japan’s fuel imports and trading giant JERA and Australian clean energy project developer Lyon Group to tackle the Asia-Pacific energy storage market.

At the end of February, interviewed Fluence market director Dr Marek Kubik about the JV, what it can do for AES and Siemens and the positive economic and environmental outcomes that can be achieved with energy storage. You can see the on-camera discussion, which took place at this year’s Energy Storage Summit in London, below. 

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